WoE is arguably the most popular feature in inRO Chaos, generating a server population far higher than in non-WOE hours. Hotly contested by guilds, WoE is a biweekly event. The game mechanics are modified in WoE Maps, to provide a more stable and even playing field. WoE also has a few unique monsters.

WoE commences at 1800 hrs (IST) every Wednesday and Saturday with the spawning of the Emperium in Agits.